Frasier and Niles try reviving the career of a has-been theater thespian (Derek Jacobi) best known for his role in a hokey sci-fi series; Martin becomes a tanning addict. Cecil: Patrick Macnee. Noel: Patrick Kerr.

The 600th episode includes a fleeing suspect; a domestic disturbance; and a family altercation that may separate children from their father.